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diff --git a/requirements/index.php b/requirements/index.php
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+<?php
+
+/**
+ * Yii Requirement Checker script
+ *
+ * This script will check if your system meets the requirements for running
+ * Yii-powered Web applications.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @link http://www.yiiframework.com/
+ * @copyright Copyright &copy; 2008-2011 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ * @version $Id: index.php 3243 2011-05-28 22:32:30Z alexander.makarow $
+ * @package system
+ * @since 1.0
+ */
+/**
+ * @var array List of requirements (name, required or not, result, used by, memo)
+ */
+$requirements=array(
+	array(
+		t('yii','PHP version'),
+		true,
+		version_compare(PHP_VERSION,"5.1.0",">="),
+		'<a href="http://www.yiiframework.com">Yii Framework</a>',
+		t('yii','PHP 5.1.0 or higher is required.')),
+	array(
+		t('yii','$_SERVER variable'),
+		true,
+		($message=checkServerVar()) === '',
+		'<a href="http://www.yiiframework.com">Yii Framework</a>',
+		$message),
+	array(
+		t('yii','Reflection extension'),
+		true,
+		class_exists('Reflection',false),
+		'<a href="http://www.yiiframework.com">Yii Framework</a>',
+		''),
+	array(
+		t('yii','PCRE extension'),
+		true,
+		extension_loaded("pcre"),
+		'<a href="http://www.yiiframework.com">Yii Framework</a>',
+		''),
+	array(
+		t('yii','SPL extension'),
+		true,
+		extension_loaded("SPL"),
+		'<a href="http://www.yiiframework.com">Yii Framework</a>',
+		''),
+	array(
+		t('yii','DOM extension'),
+		false,
+		class_exists("DOMDocument",false),
+		'<a href="http://www.yiiframework.com/doc/api/CHtmlPurifier">CHtmlPurifier</a>, <a href="http://www.yiiframework.com/doc/api/CWsdlGenerator">CWsdlGenerator</a>',
+		''),
+	array(
+		t('yii','PDO extension'),
+		false,
+		extension_loaded('pdo'),
+		t('yii','All <a href="http://www.yiiframework.com/doc/api/#system.db">DB-related classes</a>'),
+		''),
+	array(
+		t('yii','PDO SQLite extension'),
+		false,
+		extension_loaded('pdo_sqlite'),
+		t('yii','All <a href="http://www.yiiframework.com/doc/api/#system.db">DB-related classes</a>'),
+		t('yii','This is required if you are using SQLite database.')),
+	array(
+		t('yii','PDO MySQL extension'),
+		false,
+		extension_loaded('pdo_mysql'),
+		t('yii','All <a href="http://www.yiiframework.com/doc/api/#system.db">DB-related classes</a>'),
+		t('yii','This is required if you are using MySQL database.')),
+	array(
+		t('yii','PDO PostgreSQL extension'),
+		false,
+		extension_loaded('pdo_pgsql'),
+		t('yii','All <a href="http://www.yiiframework.com/doc/api/#system.db">DB-related classes</a>'),
+		t('yii','This is required if you are using PostgreSQL database.')),
+	array(
+		t('yii','Memcache extension'),
+		false,
+		extension_loaded("memcache") || extension_loaded("memcached"),
+		'<a href="http://www.yiiframework.com/doc/api/CMemCache">CMemCache</a>',
+		extension_loaded("memcached") ? t('yii', 'To use memcached set <a href="http://www.yiiframework.com/doc/api/CMemCache#useMemcached-detail">CMemCache::useMemcached</a> to <code>true</code>.') : ''),
+	array(
+		t('yii','APC extension'),
+		false,
+		extension_loaded("apc"),
+		'<a href="http://www.yiiframework.com/doc/api/CApcCache">CApcCache</a>',
+		''),
+	array(
+		t('yii','Mcrypt extension'),
+		false,
+		extension_loaded("mcrypt"),
+		'<a href="http://www.yiiframework.com/doc/api/CSecurityManager">CSecurityManager</a>',
+		t('yii','This is required by encrypt and decrypt methods.')),
+	array(
+		t('yii','SOAP extension'),
+		false,
+		extension_loaded("soap"),
+		'<a href="http://www.yiiframework.com/doc/api/CWebService">CWebService</a>, <a href="http://www.yiiframework.com/doc/api/CWebServiceAction">CWebServiceAction</a>',
+		''),
+	array(
+		t('yii','GD extension with<br />FreeType support'),
+		false,
+		($message=checkGD()) === '',
+		//extension_loaded('gd'),
+		'<a href="http://www.yiiframework.com/doc/api/CCaptchaAction">CCaptchaAction</a>',
+		$message),
+	array(
+		t('yii','Ctype extension'),
+		false,
+		extension_loaded("ctype"),
+		'<a href="http://www.yiiframework.com/doc/api/CDateFormatter">CDateFormatter</a>, <a href="http://www.yiiframework.com/doc/api/CDateFormatter">CDateTimeParser</a>, <a href="http://www.yiiframework.com/doc/api/CTextHighlighter">CTextHighlighter</a>, <a href="http://www.yiiframework.com/doc/api/CHtmlPurifier">CHtmlPurifier</a>',
+		''
+	)
+);
+
+function checkServerVar()
+{
+	$vars=array('HTTP_HOST','SERVER_NAME','SERVER_PORT','SCRIPT_NAME','SCRIPT_FILENAME','PHP_SELF','HTTP_ACCEPT','HTTP_USER_AGENT');
+	$missing=array();
+	foreach($vars as $var)
+	{
+		if(!isset($_SERVER[$var]))
+			$missing[]=$var;
+	}
+	if(!empty($missing))
+		return t('yii','$_SERVER does not have {vars}.',array('{vars}'=>implode(', ',$missing)));
+
+	if(realpath($_SERVER["SCRIPT_FILENAME"]) !== realpath(__FILE__))
+		return t('yii','$_SERVER["SCRIPT_FILENAME"] must be the same as the entry script file path.');
+
+	if(!isset($_SERVER["REQUEST_URI"]) && isset($_SERVER["QUERY_STRING"]))
+		return t('yii','Either $_SERVER["REQUEST_URI"] or $_SERVER["QUERY_STRING"] must exist.');
+
+	if(!isset($_SERVER["PATH_INFO"]) && strpos($_SERVER["PHP_SELF"],$_SERVER["SCRIPT_NAME"]) !== 0)
+		return t('yii','Unable to determine URL path info. Please make sure $_SERVER["PATH_INFO"] (or $_SERVER["PHP_SELF"] and $_SERVER["SCRIPT_NAME"]) contains proper value.');
+
+	return '';
+}
+
+function checkGD()
+{
+	if(extension_loaded('gd'))
+	{
+		$gdinfo=gd_info();
+		if($gdinfo['FreeType Support'])
+			return '';
+		return t('yii','GD installed<br />FreeType support not installed');
+	}
+	return t('yii','GD not installed');
+}
+
+function getYiiVersion()
+{
+	$coreFile=dirname(__FILE__).'/../framework/YiiBase.php';
+	if(is_file($coreFile))
+	{
+		$contents=file_get_contents($coreFile);
+		$matches=array();
+		if(preg_match('/public static function getVersion.*?return \'(.*?)\'/ms',$contents,$matches) > 0)
+			return $matches[1];
+	}
+	return '';
+}
+
+/**
+ * Returns a localized message according to user preferred language.
+ * @param string message category
+ * @param string message to be translated
+ * @param array parameters to be applied to the translated message
+ * @return string translated message
+ */
+function t($category,$message,$params=array())
+{
+	static $messages;
+
+	if($messages === null)
+	{
+		$messages=array();
+		if(($lang=getPreferredLanguage()) !== false)
+		{
+			$file=dirname(__FILE__)."/messages/$lang/yii.php";
+			if(is_file($file))
+				$messages=include($file);
+		}
+	}
+
+	if(empty($message))
+		return $message;
+
+	if(isset($messages[$message]) && $messages[$message] !== '')
+		$message=$messages[$message];
+
+	return $params !== array() ? strtr($message,$params) : $message;
+}
+
+function getPreferredLanguage()
+{
+	if(isset($_SERVER['HTTP_ACCEPT_LANGUAGE']) && ($n=preg_match_all('/([\w\-]+)\s*(;\s*q\s*=\s*(\d*\.\d*))?/',$_SERVER['HTTP_ACCEPT_LANGUAGE'],$matches)) > 0)
+	{
+		$languages=array();
+		for($i=0; $i < $n; ++$i)
+			$languages[$matches[1][$i]]=empty($matches[3][$i]) ? 1.0 : floatval($matches[3][$i]);
+		arsort($languages);
+		foreach($languages as $language=>$pref)
+			return strtolower(str_replace('-','_',$language));
+	}
+	return false;
+}
+
+function getServerInfo()
+{
+	$info[]=isset($_SERVER['SERVER_SOFTWARE']) ? $_SERVER['SERVER_SOFTWARE'] : '';
+	$info[]='<a href="http://www.yiiframework.com/">Yii Framework</a>/'.getYiiVersion();
+	$info[]=@strftime('%Y-%m-%d %H:%M',time());
+
+	return implode(' ',$info);
+}
+
+function renderFile($_file_,$_params_=array())
+{
+	extract($_params_);
+	require($_file_);
+}
+
+$result=1;  // 1: all pass, 0: fail, -1: pass with warnings
+
+foreach($requirements as $i=>$requirement)
+{
+	if($requirement[1] && !$requirement[2])
+		$result=0;
+	else if($result > 0 && !$requirement[1] && !$requirement[2])
+		$result=-1;
+	if($requirement[4] === '')
+		$requirements[$i][4]='&nbsp;';
+}
+
+$lang=getPreferredLanguage();
+$viewFile=dirname(__FILE__)."/views/$lang/index.php";
+if(!is_file($viewFile))
+	$viewFile=dirname(__FILE__).'/views/index.php';
+
+renderFile($viewFile,array(
+	'requirements'=>$requirements,
+	'result'=>$result,
+	'serverInfo'=>getServerInfo()));
+